ZeroTier pros:

• Exit nodes don’t break if I lose wifi for a moment
• Works with custom DNS setups out of the box
• Allow-LAN actually works on Android, rather, is the default
• No member limits for free
• No need to disown devices and putting them into tags to be able to set SSH ACLs
• Works out of the box with other overlay networks and VPNs

ZeroTier cons:

• No freemium tunneling feature
• No convenient browser-based SSH that only admins can use for some reason
• Not nearly as sexy

Candles are punching above their weight these days, it seems